Pass QuicTime, QuicTime::Delta, and QuicBandwidth exclusively by value. Not flag protected. No func…

net/quic/quic_sent_packet_manager.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/quic_sent_packet_manager.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/stl_util.h"
@@ skipping 709 matching lines @@
       // Since we will not retransmit this, we need to remove it from
       // unacked_packets_.   This is either the current transmission of
       // a packet whose previous transmission has been acked or a packet that
       // has been TLP retransmitted.
       unacked_packets_.RemoveFromInFlight(pair.first);
     }
   }
 }
 
 bool QuicSentPacketManager::MaybeUpdateRTT(const QuicAckFrame& ack_frame,
-                                           const QuicTime& ack_receive_time) {
+                                           QuicTime ack_receive_time) {
   // We rely on ack_delay_time to compute an RTT estimate, so we
   // only update rtt when the largest observed gets acked.
   // NOTE: If ack is a truncated ack, then the largest observed is in fact
   // unacked, and may cause an RTT sample to be taken.
   if (!unacked_packets_.IsUnacked(ack_frame.largest_observed)) {
     return false;
   }
   // We calculate the RTT based on the highest ACKed packet number, the lower
   // packet numbers will include the ACK aggregation delay.
   const TransmissionInfo& transmission_info =
@@ skipping 220 matching lines @@
 TransmissionInfo* QuicSentPacketManager::GetMutableTransmissionInfo(
     QuicPacketNumber packet_number) {
   return unacked_packets_.GetMutableTransmissionInfo(packet_number);
 }
 
 void QuicSentPacketManager::RemoveObsoletePackets() {
   unacked_packets_.RemoveObsoletePackets();
 }
 
 }  // namespace net